ASTROSAT CZTI

Data Quality Report

Orbit 08617

Creation date: 2024-06-27T15:35:02.571828
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A03_036T01_9000001204_08617cztM0_level2.evt modeM0/AS1A03_036T01_9000001204_08617cztM0_level2_quad_clean.evt
Size (bytes)503,576,64090,273,600
Size480.2 MB 86.1 MB
Events in quadrant A3,600,159553,352
Events in quadrant B3,878,721563,836
Events in quadrant C3,434,244551,011
Events in quadrant D3,812,080527,783

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0161875
B0166631
C0159291
D0170111

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77342012.598914%
B77352633.400129%
C77351341.732385%
D77352032.624434%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7885 7736 0 0 0.00% 0.00%
B 7885 7736 29 29 0.37% 0.37%
C 7885 7736 0 0 0.00% 0.00%
D 7885 7735 45 45 0.57% 0.58%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 5 112 142837 780.43 884 862 181.9
A 8 5 32246 172.52 884 862 181.9
A 15 174 17999 94.2 884 862 181.9
B 0 214 93124 543.4 893 869 169.8
B 10 252 62479 362.89 893 869 169.8
B 10 246 62418 362.53 893 869 169.8
C 14 64 53071 261.4 864 866 199.7
C 13 61 6438 27.9 864 866 199.7
C 8 222 5204 21.72 864 866 199.7
D 7 71 201495 908.85 854 827 220.8
D 10 253 105914 475.95 854 827 220.8
D 1 52 77015 345.07 854 827 220.8

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter